Re: [cobalt-users] RAQ4i DNS - Interesting Reverse Lookup

["Gerald Waugh" <gerald@xxxxxxxxx>]

> > I've had a RAQ4i 512 looking after one of my major sites www.deeperblue.net
> > for a while now and it has been assigned two IP's of 212.67.200.130 and
> > 212.67.200.131.
> >
> > Now whilst all domain names are resolving to the right websites I have a
> > concern when I do a Trace Route or a Reverse Lookup using any of the two IP
> > addresses.
> >
> > Instead of showing up as ns.deeperblue.net and ns2.deeperblue.net (which are
> > the assigned names for the two IP addresses) it comes up as
> > ns.mda-communications.co.uk and ns2.mda-communications.co.uk which are
> > supposed to be two very different IP addresses and not related to my
> > business at all.
> >
The parent IP block of address (212.67.200.0 - 212.67.200.255) belong to:

inetnum:     212.67.200.0 - 212.67.200.255
netname:     WEBFUSION
descr:       Webfusion Internet Solutions Limited
descr:       Nottingham
country:     GB
admin-c:     JB3558-RIPE
tech-c:      JAD11-RIPE
rev-srv:     ns.webfusion.co.uk
rev-srv:     ns2.webfusion.co.uk
status:      ASSIGNED PA
notify:      ripe@xxxxxxxxxxxxxxx
mnt-by:      JAD11-RIPE-MNT
changed:     james@xxxxxxxxxxxxxxx 19990607
source:      RIPE

Unless they delegate the IP addresses to you under the rules of RFC2317 they
will always resolve to the owner.
And, I think the smallest sub-net that can be delegated if /30 which is 4 IP
addresses;
0 is the network address
1 is available
2 is available
3 is the broadcast address.

I did some more checking and your reverse is working, so someone must have done
the work OK.

 Query for 130.200.67.212.in-addr.arpa type=255 class=1
  130.200.67.212.in-addr.arpa PTR (Pointer) ns.deeperblue.net
  200.67.212.in-addr.arpa NS (Nameserver) ns.webfusion.co.uk
  200.67.212.in-addr.arpa NS (Nameserver) ns2.webfusion.co.uk
  ns.webfusion.co.uk A (Address) 212.67.202.1
  ns2.webfusion.co.uk A (Address) 212.67.203.240

Also go to http://www.his.com/cgi-bin/nslookup and enter your IP
You will get:
Name:    ns.deeperblue.net
Address:  212.67.200.130
Try it!


Gerald